1. Ablain M, Cazenave A, Larnicol G, Balmaseda MA, Cipollini P, Faugère Y, Fernandes M, Henry O, Johannessen J, Knudsen P et al (2015) Improved sea level record over the satellite altimetry era (1993–2010) from the Climate Change Initiative Project. Ocean Sci Discuss 11(4):2029–2071
2. Amante C, Eakins BW (2009) ETOPO1 1 arc-minute global relief model: procedures, data sources and analysis. US Department of Commerce, National Oceanic and Atmospheric Administration, National Environmental Satellite, Data, and Information Service, National Geophysical Data Center, Marine Geology and Geophysics Division
3. Antonov J, Seidov D, Boyer T, Locarnini R, Mishonov A, Garcia H, Baranova O, Zweng M, Johnson D (2010) World Ocean Atlas 2009, volume 2: salinity. In: Levitus S (ed) NOAA Atlas NESDIS 69, p 184
4. Balmaseda MA, Dee D, Vidard A, Anderson D (2007) A multivariate treatment of bias for sequential data assimilation: Application to the tropical oceans. Q J R Meteorol Soc 133(622):167–179
5. Balmaseda MA, Fujii Y, Alves O, Lee T, Rienecker M, Rosati T, Stammer D, Xue Y, Freeland H, McPhaden MJ et al (2010) Role of the ocean observing system in an end-to-end seasonal forecasting system. In: Proceedings of oceanobs 9